Chuck for talking-machine needles and the like



P. FARB.

CHUCK FOR TALKING MACHINE NEEDLES AND THE LIKE.

APPLICATION FILED OCT- 4. 191a.

1,383,6 1 3. Patented July 5, 1921.

@WINY OR rINoUs FARB, or SAGINAW,'MIGHIGA1\T, assrenoe TO sonoRA PHONOGRAPH co RATION, A CORPORATION on NEW YORK. i p

CHUCK FOR TAIlZKING-MAOHINE NEEDLES AND THE LIKE.

Application filed October 4, 1918. Serial No. 256,837.

To all 10710772, it may concern:

Be it known that I, PINCUS FARR, a citizen of the United States, and a resident of the city of Saginaw, county of Saginaw, and State of Michigan, have invented a certain new and useful Improvement in Chucks for Talking-Machine Needles and the like, of which the following is a specification.

My invention relates to that form of sound-box holders or chucks for talking machine styli or needles and the like in which the stylus or needle is held. by its upper end passing into a tubular socket, and being retained therein by the pressure of the point of a thumb screw forcing it against the side of the socket.

The invention especially contemplates the provision of means to improve the sound acoustics and resonant qualities of'the reproduction in talking machines, and also to provide a more rigid support for the styli or needles of talking machines and other machines in which needles or other similar tools or devices are used.

One object of my invention is to construct the stylus or needle holder so that the stylus or needle is gripped practically on its whole length in the socket, thus eliminating wabbling of the stylus and giving a stronger vibratory influence to the apparatus, greatly improving the reproduction of the sounds.

A further object is to secure the stylus in the socket, in such a manner that it becomes practically impossible for it to become loose while being used; and

A further object is to have all the parts of the holder simple in form, easily located, reliable and efiicient in operation, and economical to manufacture.

The invention consists in the novel con 'struction, combination of elements, and arrangement of parts, which will be exemplified in the construction hereinafter described in the specification, and illustrated in the accompanying drawings considered together or separately.

The inventive idea involved is capable of receiving a variety of mechanical expressions, one of which, for the purpose of illustrating the invention, is shown in the accompanying drawin s.

The invention will be first described in connection with the accompanying drawings, illustrating one embodiment of my invention, wherein similar reference characters Specification of Letters Patent.

Patented July 5, 1921.

are used to designate corresponding parts throughout the several views, and then more provided with a chuck or stylus holder embodying my invention;

Fig. 2 is a vertical sectionof the stylus holder, on the line 00-x in F 3; and

Fig. 3 is a plan view of the under side of the stylus holder.

In the drawing, 1 designates a sound-box having the usual diaphragm and stylus arm. The stylus bar 2 is secured to the base 3 thereof by means of screws at 4, l, passing through the extremities of a supporting bar 5. The stylus holder or chuck 6 has a needle or stylus socket having a vertically arranged opening or slot at one side to admit-a clamping blade 10 of aholder yoke 7. 8 is the thumb screw fitted in the yoke upon the opposite side of and adapted to engage the stylus bar to hold the stylus 9 in the stylus holder; 11 is the vertical yoke arm; 13 is the set nut on the thumb screw.

By reference to the drawings, it will be seen that the clamp or yoke is in the form of an elbow lever, the vertical arm of which is provided with two sides 11, which lie against the flattened faces of the upper part of the stylus socket, and are secured thereto by the pivot 12 passing through them and the side of the stylus socket above the slot therein.

The other or horizontal arm of the elbow lever is in the form of a yoke, and is arranged about and embraces the lower square end of the stylus socket, so that its knifelike clamping projection may pass through Figure 1 1s a face view of a sound-box the slot on the lower end of the stylus socket ings, that the binding screw does not act directly upon the stylus; and is therefore in no way affected by its vibrations, and, consequently in no danger of becoming loose.

Its permanence in any position in which it may be set is further secured by means of the binding nut 11.3 shown in Figs. 2 and 3..

The advantage of this construction is, that the stylus is ripped throughout the entire length and introduced into the socket, and is held absolutely rigid with relation thereto, thus giving a stronger vibratory influence to the socket and the sound-box, improving the quality of tone, and eliminating the sharp notes which ordinarily obtrude themselves on high pitch or loud tones.

in accordance with the provisions of the patent statutes, 1 have described the principle of my invention, together with the apparatus which I consider represents the best embodiment thereof, but I desire it understood that my invention is not confined to the particular form of apparatus herein shown and described, the same being merely illustrative, and that the invention can be carried out in other ways without departing from the spirit of my invention, and there fore I claim broadly the right to employ all equivalent instrumentalities coming within the scope of the appended claims, and by means of which objects of my invention are attained, and the new results accomplished,

as herein set forth, as it is obvious that the particular embodiment herein shown and described is only one of many that can be employed to attain these objects and accomplish these results.

Having now described my invention, what I claim and desire to secure by Letters Patent is as follows:

1. A chuck for talking machine needles and the like, comprising a socket member having a slot in its side extending into the socket in said socket member, a clamping member pivotally fixed to said socket member above said slot and having an integral blade portion projecting into said slot at one side of the socket member, and a yoke carried by said clamping member and encircling the socket member and said blade portion, and a screw mounted in said yoke and adapted to engage the other side or the socket member to draw said blade portion into contact with a needle placed in said socket member.

2. A chuck "for talking machine needles and the like, comprising a socket member having a slot in its side extending into the socket in said socket member, a clamping member pivotally fixed to said socket member above said slot and having an integral blade portion projecting into said slot at on side of the socket member, and a yoke projecting at right angles from the lower end of said clamping member and encircling the socket member and said blade portion, a screw mounted in said yoke and adapted to engage the other side of the socket member to draw said blade portion into contact with a needle placed in said socket member, and a lock nut fitted on said screw between said yoke and socket member to lock said screw in adjusted position.

This specification signed and witnessed this 24th day of September, 1918.

E. l/VOLF,

lsADoR SOLOMON. 

